uggs kopen PLC in 10MN hydraulic Technical Reconst

kingloverqui

PLC in 10MN hydraulic Technical Reconstruction

High tank temperature, low temperature, high oil, low oil level; system of low pressure, high pressure; the filter clogging; moving beam is concerned, the lower limit, upper and lower limits of bits and so on. Sound the alarm sound can be manually lifted. 13117: process control, including the master cylinder to enhance the cylinder, the size of blank cylinders,[link widoczny dla zalogowanych], top down the cylinder motion control, the size of the suppression of workers head into the control. Above operations can be automatically controlled in the main console, but also on the machine to move the boxes next to operation control. PB8: control logic for unloading the pump automatically starts and stops the process of unloading protection under certain fault conditions automatically unloading protection,[link widoczny dla zalogowanych], and the completion of manual unloading / oil control. PB9: light test control logic can be damaged in time to determine positioning light, to avoid the status, fault and error indication information indicating leakage. Lamp test usually before starting the pump. 4 Conclusion (1) based on excellent performance of the PLC and electrical components, high reliability hardware and software design,[link widoczny dla zalogowanych], the modified electronic control system has a high degree of automation and advanced, safe and reliable, easy to use. Put into use at the end of 1998 to the present, have not had any problems. (2) PLC control with conventional relay control do not have a huge advantage. The system is small, high reliability and low failure rate, high cost performance, easy to maintain and improve equipment utilization and productivity. PLC interlock use strict procedures and improve the safety of the equipment (3) PLC control greatly increased the flexibility of the system. Debugging in the field, for users of the production process made some changes and functional views, do not modify the hard-wired, through appropriate to modify the program only to realize, PLC input and output points of the margin, enabling the production process after continue to expand the system functionality. (4) PLC in the press that the successful application of the transformation, PLC control technology in the transformation of old enterprises in the foreground. Reference】【l Qi-Sheng Zhang, Zhao Jing a, SCIENTIFIC INSTRUMENT, Guo Baofeng 10MN hydraulic punching head of the hydraulic system transformation - Forging Technology, 1998. (3): 50 ~ 51 【2】 Guobao Feng, Ren transported, Zhao Jing a, Qi-Sheng Zhang 10MN hydraulic punching head the technological transformation of forging technology, 1996.21 (2): 40 ~ 42 Received Time: 2000 06-19 dip. ;. Circle 8 Circle 9 step response curves of different load test the system response curves through simulation and experimental testing, the following things in the application of HD in the parameters of the system debugging rules: (1) integral control is not only a great reduction of steady-state error role, but also to reduce the transition is also advantageous when asked. When 0.1 O. O15,[link widoczny dla zalogowanych], the system unstable,[link widoczny dla zalogowanych], _, port range is O <To_ <0.0】 5. (3) the appropriate system of proportional control gain is good dynamic and static characteristics of the premise. Greater than 10o the system unstable. Seen from the above simulation results, PID control access to dynamic and static performance is poor, can be adaptive control, neural networks, self-learning and other control strategies to further improve the performance of pneumatic servo system. 【Reference】 Ningshu l - pneumatic displacement system computer 【3】 fluid pulse modulation system in the spring sun Extension points off the block pulse function with integrated units' Harbin Institute of Technology doctoral dissertation .1994.9 l4】 Toshiro is time - the air pressure of 7. right foot public works overnight 0 Xi, Imperial system . Hydraulic E air pressure, 1985,16 (4) i734 【5】 Chert, H8ndC, a, o, K, Stud) -ofthePu/seWidthModulationPnm 'Soft icServe, Sm · ProOfthe1stInternatimmlS ~ r, o-siurnoftFulidTrmmmu ~ nandn pay, 1991:366 ~ 368 【6】 Wang Xuanyin 'stretch pulse code modulation power switch / server system. PhD thesis, Harbin Institute of Technology, 1995 Received :2000-10 when asked for a I2

相关的主题文章：

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]